Changes

The TurboDuo is essentially a combination of TurboGrafx-16 and TurboGrafx-CD hardware, plus the Super System BIOS and an extra 192k of RAM built into the motherboard. The TurboDuo was capable of playing standard audio CDs, CD+Gs, TurboGrafx TurboChips, and Japanese and North American CD-ROM² (TurboGrafx-CD) and Super CD-ROM² titles. The system is able to play Japanese PC Engine HuCards with a third party HuCard converter or modification. With a HuCard converter plus a Japanese Arcade Card Duo, the system can also play Japanese Arcade CD-ROM² games.